Dettson Chinook C105-M-V, Инструкции по установке и руководство для владельца

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2. Check ductwork and filters. Determine the static
pressure and make sure it is not above the pub-
lished values for the furnace. Check the rate and
outlet air temperature at high and low-fire heat and
compare to the nameplate maximum values.
3. Check wiring and connections. Replace and/or re-
pair as necessary.
4. Insure properly sized burner orifices are installed.
Check the manifold pressure at high fire and com-
pare to the nameplate values. Adjust as needed.
12.13 26 - Line Neutral Reverse
12.13.1 Description
This fault code is an indication that line voltage and neu-
tral are reversed to the furnace control. No operation is
allowed to proceed until the problem is corrected.
12.13.2 Causes
Line and neutral to the furnace have been interchanged
at the furnace or to the breaker box.
12.13.3 Solutions
Check voltage with meter and reverse line and neutral if
necessary.
12.14 30 - Control Board Fuse
Blown
12.14.1 Description
The control board has a 3 amp fuse to protect the 24 v
connections.
12.14.2 Causes
Electrical problems external to the furnace.
12.14.3 Solutions
Change the fuse (3 amp automotive type).
12.15 33 - MRLC (Manual Reset
Limit Control Open)
12.15.1 Description
The Manually Reset Limit Control (M.R.L.C.) is also
known by the name “Rollout Switch”. When this limit
open, they must be manually pushed back to open
(hence the name; Manually Reset) to force the acknowl-
edgement of a critical fault. This fault will occur when
flames have rolled out of the normal area in the heat
exchanger and into the burner compartment. This fault
should rarely (if ever) be seen in the field and indicates
a very serious problem that must be fixed before furnace
operation can continue.
12.15.2 Causes
1. Insufficient venting through either the inlet or ex-
haust.
2. Loose or faulty wiring.
3. Unstable flame pattern.
12.15.3 Solutions
1. Check that the pressure switch(es) have not been
welded closed or bypassed. Check that the inducer
is operating correctly. Ensure that the venting does
not exceed the maximum specified lengths. Check
for obstructions in combustion venting. Check that
the inducer and center panel/heat exchanger are
properly sealed.
2. Check wiring and connections. Replace and/or re-
pair as necessary.
3. Check that all burner assembly components are
properly installed. Check that all seals between the
burner and blower compartments are tight. Ensure
that the door seals are in place and that the burner
door is properly installed and does not leak. Check
to make sure that the heat exchanger has not been
damaged; i.e.: crushed tubes, breached conden-
sate box and etc.
12.16 44 - Low Pressure Control
Switch Closed
12.16.1 Description
The low pressure (low fire or multipotision) control switch
should not be closed when the inducer is not running. If it
is, this is a sign of a serious condition. The switch may be
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